package com.atguigu.listener;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.atguigu.domain.EduSubject;
import com.atguigu.domain.excel.SubjectData;
import com.atguigu.exceptionhandler.GUliException;
import com.atguigu.service.EduSubjectService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;


public class SubjectExcelListener extends AnalysisEventListener<SubjectData> {

    public EduSubjectService subjectService;

    public SubjectExcelListener() {
    }

    public SubjectExcelListener(EduSubjectService subjectService) {
        this.subjectService = subjectService;
    }

    @Override
    public void invoke(SubjectData subjectData, AnalysisContext analysisContext) {
        if(subjectData==null){
            throw new GUliException(20001,"文件数据为空");
        }
        EduSubject existOneSubject = this.existOneSubject(subjectService, subjectData.getOneSubjectName());
        if(existOneSubject==null){
            existOneSubject = new EduSubject();
            existOneSubject.setParentId("0");
            existOneSubject.setTitle(subjectData.getOneSubjectName());
            subjectService.save(existOneSubject);
        }
        String pid = existOneSubject.getId();
        EduSubject existTwoSubject = this.existTwoSubject(subjectService, subjectData.getTwoSubjectName(), pid);
        if(existTwoSubject==null){
            existTwoSubject = new EduSubject();
            existTwoSubject.setTitle(subjectData.getTwoSubjectName());
            existTwoSubject.setParentId(pid);
            subjectService.save(existTwoSubject);
        }

    }

    private EduSubject existOneSubject(EduSubjectService eduSubjectService,String name){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("title",name);
        wrapper.eq("parent_id","0");
        return eduSubjectService.getOne(wrapper);
    }

    private EduSubject existTwoSubject(EduSubjectService eduSubjectService,String name,String pid){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("title",name);
        wrapper.eq("parent_id",pid);
        return eduSubjectService.getOne(wrapper);
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {

    }
}
